Observing bacteria growth by SkyTrain lines
Alyn Shao
University Transition Program
Floor Location : J 144 H

The objective of the project is to observe the bacteria growth of the three SkyTrains in Metro Vancouver. The SkyTrain lines are used by around 500,000 people every day and illnesses can spread rapidly in the carts so good hygiene is important. The proposed hypothesis is that all lines will have large amounts of bacteria. This hypothesis will be tested by swabbing handrails in each of the SkyTrains and examining the bacteria growth on the Petri dish. They will all be swabbed during Vancouver’s afternoon rush hour, at four o'clock exactly, and the handrails would all be the one closest to the middle door. Each Petri dish will be filmed for seven days to observe bacteria growth. At the end of the lab, it was found that all SkyTrains were incredibly contaminated with bacteria, although with varying levels. The Expo line contained the most colonies and had the most variety in type. This was closely followed by the Millennium line. The solution to this problem is for TransLink to set up hand sanitizers at all SkyTrain stops so that passengers will be able to wash their hands while waiting for the SkyTrain thus killing the bacteria living on their hands and preventing the spread of diseases.